Just installed the 8gb RAM kit in my mini and WOW everything is SO much faster! Literally took 2 minutes for the upgrade, bottom cover off, old ram out, new ram in, and cover back on. Couldn't have been easier! Here is the kit I bought from OWC: http://eshop.macsales.com/item/Newer Technology/8566DDR3S8GP/ Absolutely no problems booting up or anything. So far very happy!